Drilling-machine.



messes'.

T. LARSSON.

DRILLING MACHINE. APPLwATIoN rum) mm2. 1903. Rmmwnn JUNE 2o. 1go?.

3 SHEETS-SHEET 1.

PATBNTED JAN. 28, 1908.

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LUL" 7(65565 PATENTED JAN. 28, 1908. T. LARSSON.

DRILLING MACHINE.

APPLIoATIoN rum) HAY 22, 1903. BENEWBD JUNE 2o. 1907. l

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UNTTED STATES PATENT oEEioE.

THURE LARSSON, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO HIMSELF, W. D. STOKES, OF NEW YORK, N. Y., AND FRED A. .I ONES, OF WORCESTER, MASSACHUSETTS.

DRiLLING-MACHINE.

Specification of Letters Patent.

Patented Jan. 28, 1908.

Application filed May 22| 1903| Serial No. 158.316- Renewed Tune 20| 1907- Serial No: 379.926.

- This invention relates to that class of drilling The especial objects of this invention are to construct the rotary head which transmits power for operating a drive-pipe so'that it may be used to assist in coupling on additional lengths of drive-pipe, and to rovide self-oiling means for supportan lubricating the rotary-head so that t e same will v-act to automatically circulate the oil Arequired for lubricating the bearings thereof. To these ends,th1s invention consists of the drilling apparatus and of the combina-- tions of parts therein as hereinafter described and more particularly pointed out in the claims at the end of this specification.

j In the accompanying three sheets of drawings, Figure 1 is a plan view of a drilling ap- I paratus constructed according to this invention. Fig. 2 is a lon itudinal sectional -view thereof. Fig. 3 is a etail view showing the guide-plates of the driving-head raised.

Y 4 is a similar view showing the operation of the parts in coupling on an additional length of drive-pipe. Fig. 5 is a perspective view of -the lower end of t e keyed or top section of drive-pipe, Fig. 6 is a perspectiveI view of a plain section of drive-pipe and its coupling;

and, F' 7 is a perspective view of one of the constructed according to this invention, as

invention relates, the boring or sinking of a hole into the ground is accomplished by a i drill-cylinder which is turned by a drive-pipe.

As the well is sunk, additional lengths of drive-pipe are cou led on until -the well reaches the desired epth.

This invention relates especially to the rotary-head which is employed for turning or' rotating the drive-pipe.

In a drilling apparatus constructed according to this invention, the .body portion of the rotary-head is provided with an annular groove, and is mounted to run on supporting rollers. The gearing for turning the machines which' are employed for boring oil-Wells, Artesian-wells, wells for long- 'run plunger elevators, or for similarpurposes.

cated. To accomp ish this, the (giving pinion runs in an oil-chamber or poc et so as to carry oil up to the gear-teeth on the underside of the cover, the oil which drops off of these gear-teeth running down on to the bearing-rolls. and thence back to the oil pocket which coperates with the driving pinion. The connection between the rotaryead and the drive-,pipe is-'made by movable cover sections which are preferably hinged in-place. so that they may be turned bac out of the way when the drive-pipe is to be lifted or raised out of thewell. The cover sections also preferably coperatev to form a Wrench socket or recess 4which may receive the lower section of a driving-pipe-coupling, so that the rotary head may be used to assist in unscrewing or disconnecting sections of drive-pipe when it is desiredto couple in a new section of pipe.

Referring to the accompanying drawings for a detail description of an apparatus embodying thisinvention, as shown in Fig.

-1, the construction comprises a wooden frame-work consisting of side ieces 10 connected by cross-pieces 11'. olted on to and su ported from two of the cross-pieces 11 is a earing-or support 12, extending from which is a plate 13. Secured on the plate 13 of the bearing-piece 12 and on one of the cross-pieces 11 respectively, are bearingboXes 14 and 15, journaled in which is a driving shaft 16 which may be turned from any suitable source of power, as for example, from a belt-pulley, as shown.

The rotary head of a drilling apparatus herein illustrated, comprises a ring or body portion 17, and a cover or top 18. The

ody portion 17 is provided with an annular groove and is mounted to run on supporting rollers 19 which are journaled on uprights or studs. Six supporting rollers 19 are referably employed, as indicated by dotted es in Eig. 1.

Formed'in the bottom of the bearing-piece 12 is an'annular oil-channel having a pocket or deeper section 20. Dipping into the oil piolcket 20 is a pinion 21 secured upon .the

'ving-shaft 16. The pinion 21 meshes with gear-teeth formed on the underside of -the -annular cover 18. I regard this as a I 60 who are s particularly advantageous way of mounting and operating the rotary head of a drllhng machine, because by means of this construction the head will be journaled to turn with 5 comparatively little friction, and the gearing will serve to automatically circulate the lubricating oil. That is to say, the pinion 21 will carry oil from the oilocket 2O up into the gear-teeth on the un erside of the cover 18, from whichthe oil will drop down on to the bearing-rolls, as indicated, and then run back around the annular oilchannel to the pocket or oil-chamber 20.

The connection between the driving-head and the drive-pipe in an apparatus constructed according to my invention is most clearly illustrated in the third sheet of drawings. As shown therein, the drive-pipe may consilstdof one lcir mgre secalions P vhch are cou e to et er y or 'na ivei e couplings Agand B. ry p P T e u per or operative section of pipe C is provi ed on its opposite sides wit eys or splines K, which, as shown most clearly in Figs. 1 and 2, serve to connect the top pipe section with the rotary head .when the arts are in normal position, so that the ivepipe will be turned or rotated, while at the same time, the key-and-slot connection will permit the drive-pipe to descend as the well is bored. The lowermost section of drivepipe, as shown in Fig. 2, may have the drilling-cylinder D connected to its lower end. Hinged on to the part 18 of the rotary head are cover-plates 22 and 23. The coverplates 22 and 23 may be locked in their closed position by ta -bolts 24 as shown in Fig. 1, and when in t 's position, the coverplates 22 and 23 form the connection between 40 the rotary head and the drive-pipe.

When .the driveipe is to be raised for the purpose of ad ing another section .of pipe, or for any other purpose, the hinged sections 22 and 23 may be opened as illustrated in Fig. 3, and in uncoupling the drivepipe the sections 22 and 23 may be closed, and the lower part of the coupling A may be seated in the wrench socket thus formed, as illustrated in Fig. 4, so that the driving headmay then be turned by ower to disconnect the Acouplings A and 1133, and when thus disconnected, for example when a new section of ipe is to be added, the drive-pipe sections W 'ch extend down, into the well will be supported or hung from the drivinghead, so that they will not be permitted to drop down into the well.

I am aware that, numerous chan es may be made ipracticing my invention y those led in the art without departing from the scope thereof as expressed in the claims. I do not wish, therefore, to' be limited to the construction I have herein shown and described, but

Vhat I do claim and desire to secure by Letters Patent of the United States is 1. In'an apparatus of the class described, the combination of a plate or part having an oil pocket with a return oil channel leading thereto, a rotary head, bearings supporting the rotary-head, and a driving pinion meshing into gear-teeth extending down from the rotary head, the lower edge of the pinion extending down into the oilj'pocket, whereby the driying pinion will convey oil from the oil pocket to said gear-teeth from whence the oil will drip to lubricate the bearings of the rotary head, and will Athen be returned through the oil-channel to the oil-pocket.

2. In an apparatus of the class described, 8o the combination of a rotary head havingl a cylindrical body portion with an annular groove therein, a plurality of supporting rollers iitting into said groove and formin the bearings upon which the rotary hea turns, and driving gearing for turning the rotary head and for automatically supplying oil to the bearings thereof. l

3. In a construction of the class described, the combination of a plate or part having an oil-pocket with an annular return groove leading thereto, a rotary head comprisin a cylindrical body portion having an annu ar groove therein, a plurality of rollers journaled on upright studs and extending into the annular 'groove to form the bearings on which the rota head turns, and a driving pinion meshing lnto teeth extending down from the cover of the rotary head, the lower part of the pinion running in the oil pocket, whereby oil will be conveyed to the gear-teeth from whence it will drip down on to the bearing rolls and be returned through the oil groove.

' 4. In a drilling machine, the combination of the rotary-head, the driving connections therefor, and two movable sections or cover- .plates carried by therotary-head, said cover plates cooperating to form a non-circular socket when in closed position to receive and turn a drive-pipe section, and also having abutments cooperating to form a wrench socket for receiving a drive-pipe coupling, whereby a single set of cover-plates are used for turning the drive-pipe during the drilling, and for coupling and uncoupling additional lengths of drive pipe.

In testimony whereof I have hereunto set my hand, in the presence of two subscribing witnesses.

THURE LARSSON.

Witnesses z Louis W. SoU'rHGA'rE, PHILIP W. SoU'rHGA'rE. 

